public static double Perturb(double value, PerturbSetting perturbSetting)
{
EnsureArg.IsNotNull(perturbSetting, nameof(perturbSetting));
var noise = Noise(value, perturbSetting);
return(Math.Round(value + noise, perturbSetting.RoundTo));
}
public static AgeValue Perturb(AgeValue value, PerturbSetting perturbSetting)
{
EnsureArg.IsNotNull(perturbSetting, nameof(perturbSetting));
var result = Perturb(value.Age, perturbSetting);
return(new AgeValue(result, value.AgeType));
}
public static ushort Perturb(ushort value, PerturbSetting perturbSetting)
{
EnsureArg.IsNotNull(perturbSetting, nameof(perturbSetting));
perturbSetting.RoundTo = 0;
var noise = Noise(value, perturbSetting);
return((ushort)Math.Round(value + noise < 0 ? 0 : value + noise, perturbSetting.RoundTo));
}
public static long Perturb(long value, PerturbSetting perturbSetting)
{
EnsureArg.IsNotNull(perturbSetting, nameof(perturbSetting));
perturbSetting.RoundTo = 0;
var noise = Noise(value, perturbSetting);
return((long)Math.Round(value + noise, perturbSetting.RoundTo));
}
private static double Noise(double value, PerturbSetting perturbSetting)
{
perturbSetting.Validation();
var span = perturbSetting.Span;
if (perturbSetting.RangeType == PerturbRangeType.Proportional)
{
span = Math.Abs(value * perturbSetting.Span);
}
return(perturbSetting.NoiseFunction == null?ContinuousUniform.Sample(-1 *span / 2, span / 2) : perturbSetting.NoiseFunction(span));
}
public static string Perturb(string value, PerturbSetting perturbSetting)
{
EnsureArg.IsNotNull(value, nameof(value));
EnsureArg.IsNotNull(perturbSetting, nameof(perturbSetting));
try
{
var originValue = decimal.Parse(value);
var perturbedValue = Perturb(originValue, perturbSetting);
return(perturbedValue.ToString());
}
catch (Exception ex)
{
throw new DeIDFunctionException();
}
}